Woodworking machine



March 23 1926. 1,577,701

0. G. EDMOND WOODWORKLNG MACHINE Filed July 25, 1.924

4 shveetssheet 2 A 24 3 ,1 -S 6 45,, 22 a5 44- 68 1' MILE 4 -:o:

v 9 "r51 Osca 6? 54722000 March 23 192s.

O. G. EDMOND WOODWORKING MACHINE Filed July' 25, 1924 4 Sheets-Sheet 3 enter \Vashington, have inven useful Improvements 111 Patented Mar.

OSCAR e. EDMOND, or SPOKANE,

PINE SASH GQMPANY, GE

tamer earner I rate.

WASHINGTON, 033 ONf-EQIIALF TO WHITE SEOKANE, W ASKING-10H.

WOODYVOBKING MACHINE.

Applieationfilcd Il'uly 25, 1924. Serial No. 728,246.

To all 107mm it mac concern."

Be it known that 1, Oscar. citizen of the United States,

'l lmironn, a residing at Spokane, in Spokane County andState of ted certain new and \Voodworkrng Ma chines, of which the following is a specification.

My present invention 1 ments in woodwor adapted for use in assembling and rectangular frames such as screen door frames, window sash, and other sim relates to improve king machines especially ilar structures utilizingmortise and tenon oints.

T he primary provision of a power op manually controll frame may wi objectof the invention is the erated and pedal or ed machine of this character whereby the opposed sldes and ends of a th accuracy and he first placed or assembled in and then quickly compressed or joined to form a true and rigid structure. Two complementary and reciprocating heads and two complementary and plates are ametrical arranged reciprocating to reclprocate on d1- lines for an inward or working movement of the machine and an outward release movement of the machine, and the reciprocation of the parts i during a single revolution of of the machine.

li lleans are provi stopping the operation of the end of each movement or str the power-shalt s accomplished ded for automatically the machine at olze of the reciprocal heads and plates, and an emergency device is also used in connection with the automatic stopping means in case of accident.

The invention combinations and will'hereinafter be more fully set claimed.

In the accompanying lustrated one complete ex cal embodiment the principles of For convenience in tratmg one exemplifies.

consists arrangements of my my invention.

incertain 4 novel ofparts as forth and lrawings I have ilainple of tlie puysi- .invention wherein mbined and arranged in c best mode I have thus actical application of describing and illustion of my invention .l: have shown in the drawings in Figs. 3,

l and f a windo after vrefer to th w sasln A manufacture of .1, such.

and shall hereinand d the sash is provided with interior cross bars A for four panes of glass, while "n Figure T the sash has inner bars C for si: panes of glass. All of these members are inortised and tenoned and ready for joining before being placed in this machine, in the position indicated in Figure 'Z.

Figure l is a top plan view of a machine embodying my invention a rectangular frame being shown therein in dotted lines. Figure 2 is a front elevation of the machine of Fig. 1.

Figure 3 is a vertical sectional view at line'3 3 of Fig. 1 looking toward the right and showing the side bars of a sash in section.

Figure t line 4.

also showing the sides or stiles of the sash in section.

Figure 5 is an enlarged sectional detail view illustrating one of the reciprocahl'e heads and devices for operating botho'f the heads for the complementary top and loottom rails of a sash.

Figure 6., is an enlarged detail view of the stop niecl'ianism for the machine.

Figure 7 is a diagrammatic top plan view of the four holders or pairs of headsand plates for-the sash, together with intermediate dovices for engaging and retaining the interior bars of the saslnthe parts be ing assembled for a window sash with six lights or panes of gl s.

Figure 8 is an enlarged detail vertical sectional view of the mechanism for moving the carriers for the intermediate or inner bars of the sash.

Figure 9 is a detail view showing the side rails or plates of the machine and the adrails and side stiles of The machine has the usual legs or portinglrame 1 and a taole top 2, and above the table is arranged the horizontally disposed clan'iping frame which con'iprises complen'ientary slide heads 3 and 4t and complenientary slide plates 5 and (3, which move on ClltrlllCti'lOill lines. The top and bottom rails are carried on the reciprocating heads and the side pieces or stiles of the sash are carried on the reciprocating plates. Ad justable stops 5 and G are attached to the plates 5 and 6 as gages for use in properly positioning the stiles S and S on the plates. On the working stroke of the machine the heads and plates move the top and bottom the sash into engagement and then clamp these members together by means of their mortise and tenon joints.

The reciprocating movement of the heads 3 and 4e and the plates 5 and 6 is accom plished from the power shaft 7 located below the table top and journaled in suitable hearings in the main frame of the machine.

For actuating the reciprocable slide heads 3 and l from the power shaft 7 I employ a pair of cam wheels 8 and 9 lined by set screws 10 on the shaft and provided with exterior cam grooves 11 as best seen in Fig. 5 of the'drawings. Each of these operating cam wheels co-acts with a pin as 12 and 13 red to and projecting downwardly from a flanged slide bracket as 1 2 located beneath the table top and guided on tongues 14 of the table. Each or" these slide brackets has an upright lug 15 projecting through the center slot 16 of the table top. These lugs 15 support a pair of oppositely disposed, horizontal, screw bars 17 and 13, which perform the functions of pitmen and are journaled to rotate in the lugs for adjustment of the slide heads 3 and 4: toward or away from each other. i

The slide heads 3 and 1 are each fashioned with a traveling nut 19 through which said screw bars 17 and 13 pass, and it will be apparent that by turning the bars with a tool applied at the squared ends 20 of the bars-they may be turned in their lugs and nuts to move the heads. The slide heads may thus be moved toward or away from thecenter of the machine to adapt them for the assemblage of small or larger window sash. The traveling nuts move relatively supto the screw bars only when the bars are turned. The nuts are belted at 19 to the slide heads 3 and 1 and move with the bars and heads when the screw bars perform the functions of pitmen and move on their longitudinal axes by the action or the cam de vices to slide the heads 3 and l.

On the top of the machine are arranged three parallel, tubular, guide members 21, 22 and 23, the center one of which is fixed and used as a guideway for the base or block 21- of each of the slide heads 3 and l: to insure a stable movement and proper alinement of these heads. The two guide members 91. and 23 are movable laterally in connection with the assembling and joining of the inner bars of the sash as will here inatter be explained.

In addition to the adjustment of the sl heads by turning their screw bars, a further adjustment for the heads is provided by use of the movable adjusting plates or brackets 25. These brackets are fashionet with a pair of slotted lugs 26 for the bolts 27 of the heads 3 and 4. Each adjustable bracket has two slotted lugs 26 and two clamp bolts 27 by means of which the brackets are clamped to the slide heads for engaging against the outer edges 01" the top and bottom rails of the sash, and the correct gage or adjustment of the heads may thus be secured for the sash.

By reference to Fig. 9 the reciprocation of the two slide plates 5 and 6 from the power shaft 7 will be apparent. Two pairs oi": eccentrics as 28, 2-9, 28,29 are keyed to rotate with this shaft, and each eccentric has a strap as 30, 31 to which the respective screw bars 32, 33, 32", are pivoted at These pairs of screw bars are spaced apart as shown in Figure 1, one pair at each side of the center of the machine, and are designed to form astable, well braced actuating means for the slide plates 5 and 6, which as shown are of greater length than the slide heads 3 and 4:.

Near the outer end of each screw bar 32 33 32 33 is carried a sprocket wheel as 35, 36, ST, 38 which wheels are connected in pairs by the sprocket chains 39 and 40 located at the outer opposite sides of the machine. Each of the sprocket wheels has ahub 41 with an interior thread for the screw bars, which hub is rotatable in a bearing ring 4-2 that is carried within the lower end of a supporting yoke 4-3. These yokes 13 are provided with upper horizontal plates 4% bolted to the slide plates 5 and 6 and the plates 44 slide and are guided in grooves 4.5 (Fig. 9) in the table top of the machine.

A reciprocable movement is imparted to the slide plates 5 and 6 with each revolution of the power shaft 7 through the eccentric connections and the screw bars acting as pitmen.

For adjusting the slide plates 5 and 6 toward or away from thecenter of the ma chine to adapt them for use with 'various sizes of window sash, the SPLOOKC'E- chains or sprocket wheels are manipulated. The hubs or the sprocket wheels th n act as traveling nuts on the screw bars, and when the proper adjustment is secured the lock nuts 4-6 on the screw bars are turned against the. inner ends of the hubs and their bear iug rings to lock the wheels on their screw bars. -,lhe chains are operated manually to turn the wheels, or one wheel of each connected pair may be turned and through its chain the complementary wheel is turned. lVhen the inner bars G of the Window sash are being joined with thestiles and rails of the sash the bars are supported by ineansef slide blocks 47 and 48 shown in Figures 10 and 11 respectively; Asmany of these blocks are used as are necessary and they are attached to the laterally movable guideways 21 and 23. The'blocks are slidable in the guide ways to accommodate bars spaced atvarious dlstances for sup-.

porting panes of glass of differing size. The blocks 47 are fashioned with four spaced lugs49 as guides for intersecting bars C, and an extension arm 50 of each block has spaced lugs 51 for the short bars 0.

The blocks 48 each have aYpair of spaced lugs 52 for the reception and support of the 47 are located at the center of the machine long bars 2 as best seen in Fig. 7 Blocks and blocks 48 are disposed at equidistant pointsat the jright and left of the machine of Fig. 7. They are slid along in their guide ways 21 and 23 to the proper position and then fixed in this position. on the guideways by means of set screws 52 (Fig. 8) in the perforated lugs 59 (Figs. 10 and 11), of the blocks. i j

The two guideways Qland 23 form carriers for the interior bars of the sash and .are laterally reciprocable on the frainebars .60 toward and from the-fixed, center guideways 22. i This movement is for the purpose of joining the inner sash bars when such sash bars are being assembled in the sash, and the movement of these carriers, which is received from the power shaft 7, is timed with relation to the movement of the heads 3 and 4 and the plates 5 and 6 in order that the inner bars are properly joined.

For actuating these carriers two cam disks as 61 and 62, (Figs. 4 and 8) are keyed to the power shaft 7 and each disk is fashioned with a depression or cam surface ash?) or 64 on its periphery. These disks co-operate with two levers as 65 and 66 joined at their free ends by spring 67 below the disks, The two. levers are keyed on parallel spaced rock shafts 68 and 69 j ournaled in the mainframe of the machine and each lever carries a roller' as 7O, 71 for co-actiou with the depression or cam face 63 or 64 of the disks. The short arms 72 and 73 (of the levers) are pivotally connected to link bolts 74, and these bolts are connected to perforated angle arms fixed to the outer sides of the respective carriers 21 and 23. By means of nuts 76 on the link bolts 74 the leverage may be adjusted to vary the m vement of the carriers 21 and 2S. 7

The I'Dtltlllll, 1 operated by means of )ower ajalied to Julie 75 on the-drive ll 1 .Y

, shaft 76 which is journaled in bearings 77 at one end o'ffthe machine,and power is transmitted to the operating or power shaft 7 through a drive pinion Q78 and a. larger gear 79, the latter on the power shaft ,7.

In connection with the drive pulley. aslide clutch member 80 is used on the drive shaft, the latter being keyed to rotate with the shaft and the pulley being loose thereon. Through the engaged clutch and pulley power is transmitted to the operating shaft, and this transmission of power is controlled from afoot pedal 81 located in convenient position for the operator at the base of the [machine The pedalgis suspended or {piv oted in brackets 82 aiiixed to the horizontal bar or red 82 of the machine fi'ai'iie, and at its inner end the pedal is connected by its arm 83 and pivot 83 to the bell crank clutch lever 84. This clutch lever is pivoted in the machine frame at 85, and-is suitably con nected with the clutch member 80 at 85""111 order that the clutch member may be shifted on its shaft as the pedal is actuated.

plementary clutch-members 80 onthe pulley ,for revolving the drive shaft.

A spring 83 connecting the pedal 81 'withi ,the machine frame holds the pedal elevated,

and returns the pedal to elevated position after depression. VVhilethe pedal is depressed the clutch is engaged andduring engagement of the clutch device the machine is operating.

. Theoperation of the machine is automatically stopped twice during a single revolu-- U011 of the power shaft 7,wh ch revolution causes a reciprocation of the heads and plates. During an idle period of the machine, the completed sash is removed by hand from the machine, and stiles, rails and bars for a succeeding sash are placed in position in the retracted parts of the machine for assembly and joining.

After the peda lha's b the purpose of engaging-the clutch to start the machine, pressure may beremoved from the pedal if desired and the machine will perform its function after which its opera- By depressing the pedal the clutch lever isja'c tuated to shift the clutch member '80 intofrictional contact or engagement with comcen depressed for V of the roller.

89 pivoted at 90 on an arin 91 of an angular lever 92,-and this angular lever is pivoted loosclyto the bell crank or clutch lever 84 in such manner as to permit a slight lateral movement of the angular lever with relation to the clutch lever. The pawl ispivoted in a forked end of the arm 91 and is'limited in its moven'lent in thetorked end with a counterbalanced rearend ot' suflicient weight to normally hold the pawl in position in full lines Fig. 6. V

The arm'92 ot' the angular lover or release lever extends horizontally and outwardly from the machine adj acent; to and parallel with the pedal 81 for ready access-by the operator should it become necessary to stop the machine by an emergency release of the clutch. The angular release lever has attached to its-arm 91 a iring 94, one end of which is anchored to the machine'frame, for exerting its tension in pulling the release lever to the left in F 3 and 6. Below the pivoted pawl on the arm 91 is a fixed 'laterall T iro'ectin cam-luv 95 which rides around a roller 96 journaled on a fixed bearing rod'97 of the machine frame. When pedal 81 is pressed downwardly by foot power, or in an emergency the pressure is applied to the arm 92 of the release lever to move it to dotted position, the cam-lug -co-acts with pedal is depressed to engage the clutch memthe roller. Thus when the here 80 80 the clutch'l-ever elevates the reabove the roller 96. The spring 9d permits a slightlateral movement of the release lever 91 to allow the cam lug to rlde around the roller, and then the spring pulls the arm 91 to'the left in Fig. 6' to rest on top The lug now acts as a detent on the top -of the roller to hold the clutch mechanism in engaged position for operation of the machine. In this position thepivoted pawl '89 .is held in the path of movement of-the tappet pins on the rotating-disk 86. As the machine operates the disk revolves anti-clockwise in :Figure 6 and pin 88 will come incontact with the pawl.v This action swings the arm 91 with its pawl on the loose pivot 93 a sufficient distance to free the detent 95 tronr its roller, and the pedal spring 88 now pulls upwardly on the "free end of the pedal to actuate the clutch mechanism and release or disengage the clutch members. This movement of the pedal pulls the release lever down to dotted position in Fig-6, and as the release lever is pulled down the detent or cam lug 95 rides down and around the roller 96. The spring 94 then pulls the release lever 91 to thezleft in :Fig. 6 drawing the detent or cam lug under the roller 96 as shown in dotted lines.

Assuming that this described movement of parts and stopping of the machine octhe sash the entire sash is removed from the machineby hand atflthis jtime before't-he carriers 21 and 23 can move and disjoint the'inner bars of the sash. After th'ecltitch is engaged and themachine operates toretract the headstand plates, "the tappet pin 87 will engage the pawl 89 to stop the machine atthe end of its out-ward stroke with'the heads,platesand carriers in position to receive elements of another sash,

and the performance for operating and stopping'the machine is-repeated.

The push members or heads and plates are adaptedto be fixed in adjustedposition for various sizes and shapes oftrames both v as to width and'height of windowsand for screen door or other door frames and similar structures. For screen "door iframes where the door istwo or three'times a's'high as it is wide, thepush-heads 3 and 4 are'run out, by sliding, in thegroovetlrail or guide ways 22towardthe ends thereof andfixed in desired position, and the puslrplates 5 and 6 are provided in sufficient length to co-act with the pusher-headsin these various positions. Themachine operators stand 'next'to the pusher plates and place the sash elements in position as well as removefthe completed sash and this may be done with rapidity and convenience. The machine as thus described is capable of rapid, accurate and efiicient performance of its functions in the manufacturev of window, door, or other frames, and reduces the cost of labor as well as the time required for manufacture.

.Having thus fully described my invention what I claim as new and desire to secure by Letters Patent is 1. The combination with a reciprocable plate and a. pair of spaced yokes thereon, of a sprocket wheel journaled in each yoke and provided with an internal thread, a

sprocket chain connecting said wheels, an intermediate power shaft and eccentrics thereon, and a screw bar in each sprocket wheel having an operative connection with an eccentric.

2. In a machine asdescribed the combination with a drive shaft and aclutch thereon and a power shaft and operative connections between said shafts, of means for actuatingthe clutch including a clutch lever, a disk on the power shaft having a- 'pin thereon, a releaselever pivoted on the clutch lever and a pivoted pawl on the release lever for co-action with said pin, afixed abutment and a detent on said release lever for 00- pivoted pawl on the release lever, andmeans action With said abutment. for contacting with said pawl for the pur- 3. The combination in a clutch. actuating pose described. mechanism of a release lever having a detent In testimony whereof I afiix my signa- 5 thereon and a tension spring connected to tnie. r the lever, a roller having a fixed journal bearing for co-operation with said detent, a OSCARG. EDMOND. 

